Incompatible with location proximity-based views?

Issue Summary

I have a view setup using the location module to do proximity searches via zip code. The view functions fine alone, but when I enable views filter block module the views begins to produce an error:
user warning: Unknown column 'distance' in 'order clause' query: SELECT location.country, IF(location.province='' OR location.province IS NULL,'unknown',location.province) AS ...

My guess is that the "distance" field is somehow not being recognized properly with the views filter block module i senabled, but is recognized fine with it disabled. (I know very little about drupal module programming :( )

Any ideas what could be causing this problem?